Question

Velocity of light ray in two media A and B are v1 and v2 respectively.
(a)V2=1.5V1 then which medium is denser?
(b) What is the refractive index of B with respect to A?​

Answer 1

Answer:

The three imaginary elements X, Y and Z represent a Dobernener's triad. If the atomic mass of element X is 14 and that of element Y is 46, then the atomic mass of element Z will be

(a) 28

(b) 60

(c) 78

(d) 72